Selenium
A rare element in the Earth's crust, discovered in 1817 and originally noted only for its toxicity, selenium is now known to be essential in small quantitiesfor all higher animals.....
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Zinc
Zinc is an essential nutritional metal element of massive importance to all living organisms. Half the soils in the world are Zn-deficient and the WHO estimates.....
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Boron
Boron is a fascinating, essential trace mineral in plant and animal nutrition. It has long been used as an industrial chemical with roles in timber treatment, ceramics, semi-conductors and......
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Magnesium
Magnesium is the central atom in a molecule of chlorophyll, so no magnesium means no chlorophyll, therefore no plants, no animals and no humans. The amount of magnesium.....
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Molybdenum
Molybdenum is another interesting mineral with important roles in the growth of plants out of all proportion to the tiny amounts required. It is present in very small amounts in most soils.......
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Iron
Apart from having many world class scientists in the 18th and 19th centuries, the main reason that the UK became the first industrialised nation on Earth was the presence of abundant.....
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Sulphur
There are areas in the world where soil selenium levels are so high, they are toxic to ruminants. The local solution is to apply sulphur, which is highly antagonistic to selenium. It is very effective.
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Major Minerals
Major minerals or ‘macro’ nutrients are usually found in the soil in the largest quantities and can have a significant effect on the availability of trace elements when excessive or even deficient.
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